WVUK31 EGRR 121200
EGGX SIGMET 4 VALID 251600/252000 EGRR-
EGGX SHANWICK OCEANIC FIR VA ERUPTION MT HEKLA PSN N6359 W01940
VA CLD OBS AT 1600Z WI N6000 W01150 - N5900 W01300 - N6000 W01600 - N6000 W01150 SFC/FL550 NC=
